Spark-coil-testing device.



H. P. GOERZ.

, SPARK COIL TESTING DEVICE.

APPLICATION FILED APR. 7. 1916.

1,244,049. Patented Oct. 23, 1917.

wamessas INVENTOR BY W 2 4 ATTORNEY UNITED STATESUBATENT;QFFIGE! HENRY r. Gonnz, or MARION, scum DAKQTA, p

srAnK-comrns rmc pEvIcE.

Specification Letters-Pat ent,

To all whom it may concern:

Be it known that IQHENR P. Gonnz. a citizen ofthe United States, residing at Marion in the county of 'lurner and State of South 6 Dakota, have invented certain new and useful Improvements in Spark- Coil: Testing Devices, of which the following is a specific'ation.

This invention relates to a spark coil test ing device and more particularly to an apparatus which is designed to determine Whether or not the coil box for an automobile is proper Working order: hether the secondary or primary coils of the coil box are defective or' whether the master vibrator contained Within the coil box is properly adjusted or in working order.

The invention further aims to provide a device that may he kept in a garage ,or repair station where it may be used when it becomesnecessary to testthe adjustment of the vibrator of an automobile before tamper-. in'g Withthe plugs, disturbing the ohrhnreter,

o ladjusting the timer when determining adefectiiithe operation of the motor of an automobile.

l The invention further aims to provide a device wherein advantage is taken of the spark'whi'ch occurs in agap in the wiring of rlmary, or secondary coil of a coil box, the

80 a V co iorof. the spark in a gap in the Wiring of "*the primary coil being blue and the color of a spark in a gap in the wiring of the secondary coil being red. It is therefore one of the 3 objects of thedevice to provide a construc tion whereby a spark will be created when 'the'coil box is mounted upon the-support withits terminals contactin with-contacts providedQforthe same, the co or of the spark determining where defect, i-f any, lies l inlthecoil box.

a furtherobj'ect of this invention is the prj'pvisi'on; of 'a spark coil testing device wh h'c'ousists of comparatively few parts an; simplein construction b ut durable anj e11 -adapted to withstand the rough to which devices of this character are 1 V lbl edi 1 a full descri' tion of theinvention and ordlna the advantages an 'merits thereof, reference =1 p is be had .totlie following description and the 'accompanying drawings, wherein is'illustrated' the preferred form of my invention,

in which:

a Figure '1. is a perspeeftireview of the lie; e qw p i Wir .the efoeain.dmg ram.--

Application filed April 'l, 1916. I Serial No.' 89,658.

conductor arm 18 is mounted having a;

"The, vertical supporting late '1 is pr ving .at its upperand Withfaii enlargedjolinilig li l Patented out. .23; 191%;

Fig. \2 is a transverse horizontal section on the line 2 2- of Fig. 1.

. F ig. :3 iSa diagrtu'mnatic view, the light lines-indicating the wiring of the coil in'a coil box and the heavvlines indicating the f circuit of the apparatus constituting the vention- The body of the device consists of a folding support which comprises the vertical supporting plate 1 which is provided with an" aperture 2 at its upper end whereby it may be hung on a hook on the wall of the gara or repair station and a.shelf 3 'whic'h' 'is hingedlv mounted to the lower edgedf the, supporting plate- 1 by means of a'hinge 4. Folding supporting -ar1'ns"5"are provided with a-joint (int their'centers and have their ends pivotallv mounted on the edges ofthe plate 1 and the shelf 3'by nieansof pivot; 7Q

..pins .or bolts 7 andfroni thisconstru'ctiofi it 10 Whichleads from the batteries B. "The vertical plate 1 is provided with a longitudinally extending depression or recess 11' and v arranged in the recess is a pair offeontacting plates 12.111161. 12mm: contacting plate 1 3iloe' ing carriedby the spring arm lflfwhich is secured to plate 15 of insulat'ingor non conducting material. by a "fastenlng sc ew 1.95

16." The upper end of the ar'rn'14',above th fastening-screw 16 is tent as at l7 vide a groove through which an fathujst bl dle 19 of non-conducting nriateri a l. The c .tact'plate 12is mounted upona spring 2O which is secured'to the plate 1'51attlieiopposite I side to-W'hieh the spring arm' lfif'is secure and is fastened by the'dastening" screw and terminates ina sharp poin t A te .minal screw 23 is arranged onthe spring rin .20 and receives the end' of the conducting" wire 24 which extends. from thie batter es from the terminal opposite to the tenninal to which the conducting-Win10 is fastened 1110 and it will observed that the plate is provided with a U-shaped cut-out portion which allows the sides of the plate 15 to be in position on opposite sides of the openin r 25. Fastened to the plate 15 in horizontal a inemeat with the conductingarm 18 is asmall gap in the circuit when the coil box is in position on the device. The lower edge of the small plate 26 is provided with at point '28 which is small in formation to the point 22 0f the end of the spring arm 20 and thereby provides a short up in which a spark is made when the coi box is in position.

-B v reference to Fig. 3 of the drawing it will be observed that the light-lines represent the winding of the'coil box and the contact plate 8 is in contact with the terminals of both the secondary and the primary coils with the vibrator V arranged in the wiring of the primary coil. The contact plate 12 rcceivcsthe opposite-terminal of the primary coil and the contact plate '13 receives the opposite terminal of the secondary coil. When the circuit is thus completed the current will pass through the primary coil, and if v the vibrator is in working order, a secondary current passes" thi-Qugh the secondary coil and across the gaps between the points 18' and .27 and also between the points QSJand 22 where a spark will occur which will vibrator are in working condition. Should no spark occur, the adjustable conducting arm 18 will be thrust forwardly toward the point 27' until a spark occurs at the ga whereby the operator will be enabled to determine whether coil aire'defectivc and, if no spark occurs at a] the operator will know that a defect exists in the coil or vibrator.

In reduction to practical have found that the form of my invention illustrated in tlie drawings and rcfcrred to in the above description as the preferred embodiment. is

r e resorted to,

the most'eflicientaml practicable, yet realizing that the conditions concurrent with the adoption of my device will necessarily vary,

1 I desire to (EmPlHlSIZGIIlItB fact that various mi-nor changes in the details of.construction,

.roportion amlhrranigethents of parts ma ii when required. without sacri- [icing any of the advantages of my invention, as defined i'n the appended claims.

I claim:

1. In combination-with a suppdrt, con

tact plates-carried by the support and insulated-therefrom, one of said contact plates arranged. to contact with the terminals of indicate that the coils and' or not the vibrator and conducting fingerrelation. to 'the pntl both the primary and secondary coils of a spark coil and the other of said plates arranged to contam, one with the opposite terminal of the secondary coil and the other with the opposite terminal of the primary coil, means electrically mentioned contact plates with each other, said electrical connection provided with a spark gap, and a source of current connecting the contact plate which receives both the secondary and the primary terminals with the contact plate which receives the opposite terminal of the primary coil.

2. In combination with a vertical supporting plate and a horizontal edly'inountcd on said plate. a contact plate mounted on said horizontal shelf and insulated therefrom, spring arms carried by said vertical supporting plate and insulated from said plate, contact plates carried by said spring arms. mcans formiuga conductor of current from one spring arm to the other, said means also providing a gap in said conductor, and a source of current, said first mentioned contact plate and one of said second mentioned contact plates being connected with said source of current.

- 3. In combination with a vertical support- .ing plate and a horizontal plate carried by. the plate. a non-conductive plate mounted on said supporting plate,' spring arms mounted on said ,non-conductive plate andhaving their free ends terminating in superconnecting the last shelf. hing?- posed relation in the vertical center line of said supporting plate contact plates carried by the'free ends of said spring arms, means for conducting the current from one spring arm to the other. said conducting means having a spark gap provided therein,

v said plate, a'contact plate mounted ,ina recess in saidshclf, spring arms mounted; on said vertical supporting plate and havingtheir' free ends curved inwardlyto'ward the center of said'supporting plateand arranged in superposed relation toeach other, contact plates carried by'the free arms, an adjustable conducting armcarrie by one of said spring' arms, "finger mounted adjacent the other oi said spring arms, the end ofsa arms.

ends of said sprin a conducting end; of the arranged in su erposed) of said'adjustable' cone; ducting ari n -a nd a source'of. current can'- 12s cpd' of one of said'spring 5. In' combinatidn with folding support, I

contact members mounted upon the said-sup port and insulated therefrom, certain of the a said contact lates being resiliently sup- I ported from t e said support, a source of current, and means mounted upon the said support and associated with the resiliently mounted contact plates and connected to the saidsburce of current for providing. spark gs the said means including an ad ustab e member for adjusting the width 0 the said p. p t

6. n combination. with a sup rtin member, contact plates mounted on t e sai member and insulated therefrom, resilient arms supporting certain of the said plates,

the said arms being insulated from thesup- 18 port, the said support having an opening 1,244,0se a therein and having the said resilient arins disposed on each side of the opening, means formin a conductor of current from one of the resi ient arms to the other, the said means .including' an adjustable member extending 20 into the said opening and providing a gap adapted to be adjusted in width by the said member.

In testimon whereof Iaflix my signature" in presence 0 two witneses. I

v HENRY P. GoERzQ Witnesses: I I

- H. D. Kocx,

W. W. BRADY. 

